AM3358: MMC data pins

Nancy Wang

Part Number: AM3358

Hi,

The above table in TRM shows, if i used mmc 1-bit mode, DAT[1]~DAT[7] are in Hi-Z mode. Is that mean i cannot use DAT[1]~DAT[7] as GPIO or other function? And there are two group of mmc data pins, Is that mean i can use the other group pins?

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

Hi,

Yes, unused MMC data pins can be used for any other available pinmux functionality they have. However you must be sure that this MMC port is not included in the SYSBOOT sequence, because in that case DAT[3:0] will be initialized in MMC mode by the ROM code.

0 Nancy Wang over 7 years ago in reply to Biser Gatchev-XID

TI__Expert 8210 points

Hi,

Could you please explain the above table.

if i used mmc 1-bit mode, DAT[1]~DAT[7] are in Hi-Z mode. Is that mean i cannot use DAT[1]~DAT[7] as GPIO or other function?

0 Biser Gatchev-XID over 7 years ago in reply to Nancy Wang

TI__Guru**** 393215 points

Yes, you can use them for other functions.

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AM3358: MMC data pins